NEW OR LITTLE-KNOAVN ACAIU. 



973 



Measurements. Lengtli of body (not including capitulum) 

 1820 /a; its width 1290 fi. Length of sternal plate 440/*; its 

 greatest width 420 jx, its least width 380 /a. Length of genito- 

 ventral plate (including the operculum) about 760 /x; its greatest 

 width 590 IX. Length of lateral platelet 195 ft ; its width 142 p.. 



Hah. Ofi" a rodent, Bugwe, Bunmngi, Uganda. Oollecfced bv 

 W. N. van Someren (20. iv. 1922). 



LiPONYSSUS GORDONENSis, sp. n. (Text-figs. 2 & 3.) 



5 . A single dorsal shield is present, being shaped as shown in 

 text-figure 2. On the surface of this shield there are a number 

 of very short fine hairs. In the anterior half these hairs are 

 grouped together, but posteriorly they are fewer in number, 

 apparently always being paired ; the paii'ed hairs at the extreme 



Text-fisure 2. 



Liponyssus gonloncnsis, sp, n., $ . Dorsal view. 



posterior end of the dorsal shield are much longer than the 

 others. Hairs on softer uncovered part of dorsum not very long, 

 but much longer than those on the dorsal shield (except the 

 terminal pair on the latter), and they are curved as in L. saurarum, 

 €tc. Sternal plate trapezoidal and only furnished with two pairs 



